upgrading previous build

Looking to upgrade a previous build i was helped with from here. here is a refresher of that build and its specs.http://www.3dgameman.com/forums/showthread.php?t=49821&page=5
Microsoft windows xp professional version 2002
silverstone 800 power supply.
p182 antec case
asus rampage mb
asus eah 3870x2 viceo card
gskill memory 1066 4 gigs
dvd burner as mentioned
harddrive had already ordered the seagate so went with the 500 hd
intel e8400 process with a better cooler

im looking to upgrade since it has been a few years since i built it. any suggestion for a way to go to upgrade this build. my video card seems to be making a lot more noise from the fans so i probably will definently upgrade that. but what i do on it is gaming mostly from eve online to rift and i may have more than one instance open.
just looking for some ideas to point me in a good direction.

The best thing you could do for your system for gaming preformance would be to upgrade your video card. Perhaps a GTX 560 Ti or 6870. You might also want to OC your E8400 if you haven't already done so.